Combined switch socket and plug.



W. P. MONEEL.

COMBINED SWITOH SOCKET AND PLUG.

APPLICATION FILED AUG.9, 1910.

Patented Dec. 13, 1910.

Wmj? 1% ad Witnesses Inventor v Attorney;

WILLIAM PINKZNEY McNEEL, OF SAN .AN'IQNIO, TEXAS.

GOMBINED SWITCH SOCKET AN'D PLUG.

Specification of Letters t Patented Dec. 13, 1910.

Application filed au ust e, 1010. serial 110. 576,859.

To all whom it may concerm Be it known that I, WILLIAM P. McNnnL, a citizen of the United States, residing at- San Antonio, in the county of Bexar and State of Texas, have invented a new and useful Combined Switch Socket and Plug, of which the following is a specificat on.

This invention has referenceto improvements in combined switch sockets and plu for incandescent electric lights, and its -0 ject is to provide an extension socket adaptoil therefrom at will without disturbing any other lamp.

The invention will be best understood from a consideration of the following det-ailed description taken in connection with the accompanying drawings forming a art of this specification, with the understa 'n however that the invention is not con'fin to the exact showing of the drawings since the invention is susceptible of various modifications so long as the salient features of the invention are retained.

In the drawings :-Figure 1 is a side elevation of a lamp bracket with a terminal socket, showing the intermediate socket applied thereto and an incandescentelectric lamp carried by the latter. Fig. 2 is a longitudinal section of the combined switch socket and plug forming the subject matter of the present invention, showing an ordinary incandescent lamp inserted in the socket end of the attachment and illustrating in dotted lines an ordinary socket at the pin end of the attachment. Fig. 3 is a displayed perspective view of parts of the combined socket and plug forming the subject matter of the present invention.

Referring to the drawings and first more especially to Figs. 2 and 3 thereis shown a cylinder 1 constituting the body portion of t 1e combined switch socket and plug, this body portion being lon enough to accommodate certain parts to be described.

Within the cylinder 1 is housed a disk 2 of insulatin material, this disk being located referably near one end of the cylinden one face the disk- 2 carries a ring 3 of conducting material, usually brass, this ring being secured to'the disk in an a prop'riate manner and at a suitable point 1n the circumference of the ring there is passed a screw 4 extending to the other face of the disk and there made fast to a strip 5 of brass or other suitable conducting material.

The strip 5 is secured to the disk 2 at one side of the center thereof and diametrically opposite this strip 5 there is secured. to the disk another strip 6, which may or may not be in electrical contact with the ring 3. The strips 5 and 6 extend to the end of the sleeve 1 remote from that occupied by the disk 2 and there these strips are connected by screws or otherwiseto plug sleeve 7, which may be molded into shape with embossed screw threads after t e usual practice in the formation of lamp bases. The outer end of the sleeve 7 carries an insulating end piece 8 to which is centrally secured the usual terminal plate 9 below the center terminal of the base. In the particular structure shown the plate 9 is secured to the end piece 8 by a screw 10 which also serves as a means for securing a metal strip 11 to the end piece 8 and electrically to the terminal late 9.

The disk 2 carries a central t rcaded pin 12 screwed into a bushing 13 in turn seated in an insulating disk 14 carrying a sleeve or shell 15 molded with screw threads after the usual practice in formin the receiving terminal of a lamp socket, t is shell being adapted to the usual lamp socket. The material of the shell 15 is carried around the disk 13 and intnrned over the inner face thereof, being separated therefrom by a ring 1 6 of insulating material so that the inner edge of the inturned portion of the shell 15 wi I be thoroughly electrically separated from the bushing 13 or pin 12. For strengthening and protective purposes the exterior of the shell 15 is surrounded by a sleeve 17 of insulating material. The arrangement of the parts is such that the disk 13 is inserted in the corresponding end of the sleeve 1 until the inturned end of the shell 15 is in engagement with the conducting ring 3 so that there is electric contact between this ring and the sleeve 15. The pin 12 is continued through the disk 2 and is there threaded to engage a small metal bracket 18 between and preferably to one side of the strips 5 and 6.

Through one side of the sleeve I preferably'at a point intermediate of the strips 5 and-6 and between the free ends of the strip 11 andbrackets 18 which latter are of such length as to be separated a distance one from the other, there is formed a passage 19 in whichthere is set a ring 20 which maybe so formed as to eliminate all sharp or abrupt edges at the passage 19.

' Secured to the free end of the strip 11 by. a binding screw 21 is a conductor 22 and secured'to the free end of the bracket 18 by a binding screw 23 is a conductor 24. These two conductors 22 and 24 are properly in? sulated and are carried from the interior of the casing 1 to the passage 19 to the exteriorof such casing and may form the two mem bers of an ordinar two conductor flexible cord. This cord is made of a propriate length and carries at its free en a switch 25 shown in Fig. 1, the showing being that of a familiar type of pendent switch, and as the structure of this switch forms no part of the present invention, the exterior thereof only is shown.

In Fig. 1 there is shown an ordinary elec-' triclam'p bracket 26 carrying an .ordinary' socket 27 which may or may not be provided with the usual switch mechanism. The plug end of the attachment is adapted to the socket 27 and is shown inserted therein in ig. 1, the socket on the bracket 26 being -1ndicated in dotted lines in Fig. 2. There is also shown an ordinary incandescent electrio light 28 having its base 29 inserted in the socket shell 15.

It often transpires that electric lamp brackets such as shown at 26 in Fig. 1 .are placed so high as to be inaccessible to the user, and at times such brackets are provided with switchless sockets 27 In either case it is often desirable to be able to switch on or off a lamp and in the case'of the switchless brackets this an only be done either in groups or from g distant switch.-

With the presentinven ion thelamp may be removed from the ordinary socket and the combined switch and socket ma 4 be in-I sorted in the ordinary socket and t e lamp then replaced in the exposed socket end of the attachment of the present invention.

The circuit to the lamp may then be established by. a proper manipulation of the switch 25 whereby an electrlc circuit may be .established from, say, the center terminal of the socket 27, thence by wayyof the plate 9 and screw 10 to. the switch 11, thence by way of the conductor 22 and to the terminals of the switch 25, considering the circuit to be closed at these terminals, and re turning by way of the conductorl24 to the bracket 18, thence by way of the pin 12 to the center terminal of the lamp 28, thence through the filament of the lamp, and back by way of the baseof the lamp to the shell 15, thence to the ring, and thence by thestrip 5 to the shell 7, and to the corresponding portion of the socket 27. When it 13 desired t-o put out the lamp the switch 25-:is

appropriately manipulated and the circuit. is broken at the switch 25 the same as itwould be broken at the socket 27 when the latter is provided with a switch and the latter is turned to the ofl osition.

The attachment provldes an insertible and removable switch interposable between an ordinary lamp socket and an electriclamp so that the latter may be included in the circuit or cut out therefrom at will, and the attachment may be carried from one oint to anotherand applied or removed wit the eatest facility, no change whatever in either ,the lamp or the ordinary socket being required. I v

By forming the body portion 1 and the socket covering 17 of insulating material, the attachment to all intents and purp has no exposed metal parts with WhlCh a person is llable to contact. What is claimed is:+

v1. A combined switch socket and incandescent lamps comprising a y mem- OSGS lug for ber having a plu at one end and a socket at the other end, with interior terminal extensions of the like members of the plug'andfsocket ends, and an exterior switch coupled I to the said terminal extensions.

2. A combined switch socket and lug for incandescent lamps comprising a' bo y member 'in the form of a sleeve of insulatin material, a plug member at one end thereo a socket member at the other end thereof,

an insulating disk to which the terminals of the socket member' are connected, a conducting strip extending from the plugmem- I her to the like terminal of the socket member and lying along the innerwall of the. body sleeve, the latter bein provided with as my own, I have hereto aflixed my slgna ture in the presence of two witnesses- WILLIAM PINKNEY MC EEL." I

Witnesses:

FRANK H. WASH, STELLA D. Cam. 

